ERICACEAE. — RHODODENDRON 511 
Rhododendron violaceum Rehder & Wilson, n. sp. 
Frutex 0.3-1.8 m. altus, ramosissimus, saepe fastigatus ramis 
erectis; ramuli annotini dense fusco-lepidoti; gemmae ovoideae, ob- 
tusae, pallide brunneae, perulis paucis rotundatis mucronulatis in 
medio dorsi lepidotis ceterum minutissime puberulis ciliolatis. Folia 
coriacea, ovalia v. oblonga, obtusa, rarius acutiuscula, basi late 
euneata, margine leviter revoluta, 5-12 mm. longa et 3-5 mm. lata, 
supra atroviridia, dense lepidota, subtus dense lepidota squamulis 
flavescentibus v. pallide fuscis contiguis fuscis v. atrofuscis inter- 
mixtis, costa media supra leviter impressa subtus leviter elevata, 
nervis secundariis evanidis; petioli dense lepidoti, 2-3 mm. longi. 
Flores 1-3, e gemma terminali orti, subsessiles; perulae plerumque 
deciduae; calyx cupularis, 5-partitus, lobis inaequalibus ovatis v. 
rotundatis 0.5-2 mm. longis extus lepidotis apice ciliatis in margine 
laterali lepidotis saepe scariosis; corolla infundibuliformis, violaceo- 
purpurea, circiter 2 cm. diam., extus glabra, 5-loba, tubo 4-5 mm. 
longo, intus ad faucem villoso, lobis patentibus ovalibus v. obovatis 
rotundatis 7-9 mm. longis; stamina 10, corollam subaequantia, 
filamentis 9-12 mm. longis, in triente inferiore ima basi dilatata ex- 
cepta villosis, antheris pallida fuscis; ovarium conicum, 1.5-2 mm. 
longum, dense lepidotum; stylus stamina superans, 10-12 mm. longus, 
glaber, purpureus, stigmate capitato atropurpureo. Capsula ovoidea, 
circiter 5 mm. longa, lepidota, usque ad basin in 5 valvas fissa. 
Western Szech'uan: west of Kuan Hsien, Pan-lan-shan, moor- 
lands, alt. 4100-4500 m., June 24, 1908 (Nos. 3463, type, 3460); same 
locality, October 1910 (No. 4269). 
This species is related to R. polycladum Franchet, which is readily distinguished 
by its thinner leaves tapering to the ends and uniformly colored with rufous-brown, 
lepidote not contiguous scales on the under surface, more numerous flowers (3-5) 
and different calyx. 
In the type specimens the flowers are all solitary and the bud-scales early de- 
ciduous; in No. 3460 the flowers are frequently in clusters of twos and threes with 
Persistent bud-scales. 
Rhododendron Websterianum Rehder & Wilson, n. sp. 
Frutex 0.30-1 m. altus, ramosissimus, fastigatus, ramis erectis v. 
suberectis; ramuli hornotini, cinereo- v. rufescenti-lepidoti, vetus- 
tiores sordide cinerei; gemmae ovoideae, perulis paucis rotundatis 
in medio dorsi lepidotis sparse ciliatis. Folia coriacea, congesta, 
ovata v. elliptica, rarius elliptico-oblonga, obtusa, basi plerumque 
te cuneata, margine leviter revoluta, 6-15 mm. longa et 3-9 mm. 
